MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO poisoning attempt. One prominent URL, https://ttraff.ru/wb?keyword=ez%20pdf%20reader%20pro%20apk%20full, is flagged as a malicious redirector, indicating a likely attempt to lure users to malicious content. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ttraff.ru/wb?keyword=ez%20pdf%20reader%20pro%20apk%20full
- http://bomewe.trivalleysir34.org/uploads/1/3/1/4/131455158/5688734.pdf
- http://files.theabsurdists.com/uploads/1/3/2/6/132681672/1495146.pdf
- http://zuduvo.wrhs65.net/uploads/1/3/1/6/131606490/pagimiva-fafad-xobulumovige.pdf
- http://files.freetodreamvacay.com/uploads/1/3/1/1/131163898/67ab127e.pdf
- http://bojuz.cornwallplants.com/uploads/1/3/1/6/131636664/vuximira.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0441/3738/2040/files/xotodaxivesixavoguzovogir.pdf
- https://cdn.shopify.com/s/files/1/0438/3352/4386/files/22428133358.pdf
- https://cdn.shopify.com/s/files/1/0432/5428/4450/files/73752226844.pdf
- https://cdn.shopify.com/s/files/1/0437/6012/4065/files/votaroxapilifeli.pdf
- https://cdn.shopify.com/s/files/1/0431/0774/5958/files/arabic_bilingual_dictionary.pdf
- https://cdn.shopify.com/s/files/1/0429/1405/4300/files/42561497249.pdf
- https://cdn.shopify.com/s/files/1/0434/4568/2328/files/43403694607.pdf
- https://cdn.shopify.com/s/files/1/0431/8422/6453/files/zosizuxadiditus.pdf
- https://cdn.shopify.com/s/files/1/0430/4257/0401/files/football_manager_2016_iphone.pdf
- https://cdn.shopify.com/s/files/1/0438/4695/9261/files/most_popular_discord_servers.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000064fd.binead6cf829a4da7531cfa7201b8bd116df4b40830e46129191b6f1b1b6213ba45 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64FD | 4928 bytes |
font_01_sfnt_off000075e1.bin3d721b54900a6f1d1d04b5c9ab6f2b6f60567eca84edc5caa7b65cf254184efa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75E1 | 10876 bytes |
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